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E. F. RECORDON.

ELEGTEIC BELL. No. 319,318. Patented June 2, 1.885.

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IINITED STATES PATENT EETEE.

ERNEST FREDERIC RECORDON, OF GENEVA, SWITZERLAND.

ELECTRIC BELL.

SPECIFICATION forming part of Letters Patent No. 319,318, dated June 2, 1885. militanten filed october 11, 1884. (No model.)

To aZZ whom it may concern..-

Be it known that I, ERNEST FREDERIC REcoRDoN, a citizen of the Republic of Switzerland, residing at Geneva, in said Republic, have invented certain new and useful Improvements in Electric Bells, of which the following is a speciiication, reference being Vhad therein to the accompanying drawings.

My invention relates to electric bells; and it consists in certain novel improvements whereby such bells are rendered more useful than others of the same character heretofore constructed, as will appear from the following description, when taken in connection with the annexed drawings, in which* Figure 1 is a perspective view of the main plate to which the magnets and other parts are secured. Fig. 2 is a plan of the device, the bell being indicated in dotted lines. Fig. 3 is a vertical section taken centrally through the device. Fig. 3 is a sectional detail of the insulated terminal fastening d.

The met-al plate lc is cast entire and con structed with a carrier, a a', for the electromagnet h and the bell t, also with a lug, b, for the spring Z. This plate k is also provided with holes c c', for the purpose of receiving hooks or screws to suspend the same from any established object.

Near the holes c c are the electric-wire term inals Z d', which are insulated from the plate k, as indicated at p, screws q being used for securing the posts and insulating substance to said plate.

To the terminal cZ is secured a metal strip, c, to which is fixed by a screw, f, a spring, g.

The electro-magnet l1. is provided with plates at its ends to form the poles, and this magnet is secured to the portion a of plate 7c by means of a single screw, t'. (Shown in Fig. 2.)

The spring Z, which is secured by screws m m to the lug b, is connected rigidly by screws n n to an armature, o, to which the Wire r of the hammer s is secured.

The spring g contacts with the spring Z, as indicated at a, when the armature o is not attracted by the electro-magnet h.

One pole of the electro-magnet connects by a wire, o, with the stud b, by means of a screw,

x, and the other pole connects with the ter- 5o minal d by means of a wire, y.

The bell t is adjustably secured to the partition a by means of a screw, y, and nuts zz.

In Fig. 4 I show the mode of insulating the terminals d d. The holes through plate 7c are 55 bushed out and a lianged insulating-ring, p', is used, as shown, secured on opposite sides of said plate by a screw, q, and a post to which the binding-screw g is applied.

The operation is as follows: The electric 6o current, entering at d, passes through plate c, spring g, and contact-point u into spring Z, thence through wire o into the electro-magnet, and from thence to the terminal d. The armature o is thus attracted to the pole-plates of the electro-magnet and the contact at u is broken. The armature is immediately set free, so that the contact a is re-established,and the same play is repeated, whereby the hammer s repeatedly strikes the bell t.

Having described my invention, I claim In an electric bell, the combination of the plate k, having the parts a a b cast entire, the bell adj ustablysecured to the part a, the electromagnet secured to the part a, the armature and its spring secured to the lug b, the hammer attached to the armature, the contactspring q, secured to the terminal d, and the terminal LZ, all constructed and adapted to operate substantially as described.

In testimony whereof I afx my si gnature in presence of two witnesses:

ERNEST FREDERIC IIECORDON.

Witnesses:

RoBT. M. HooPER, GUsTAvE A. DITTMAR. 

